plural onions
1
: a widely cultivated Asian herbaceous plant (Allium cepa) of the amaryllis family that has a pungent edible bulb and that is closely related to the garlic, chive, and leek
also
: its bulb
2
: any of various usually ornamental alliums (such as Allium amplectens or A. caeruleum) related to the onion
Examples of onion in a Sentence
The recipe calls for chopped onions.
He is growing onions in the garden this year.
The recipe calls for chopped onion.
Recent Examples on the Web
The Motown Philly, a Detroit-style take on the Philly cheesesteak, features hunks of shredded beef, peppers, onions and mushrooms; and the Pear Necessities consists of a sweet-savory medley of juicy pears, spinach leaves, smoky bacon, and feta, topped off with a scribble of honey.
—
Lyndsay C. Green, Freep.com, 29 July 2025
Dinner began with a plated salad of mixed greens, cherry tomatoes, slivered red onion, English cucumber wheels, chickpeas, and watermelon radish, drizzled with balsamic vinaigrette.
—Ashlyn Robinette, People.com, 28 July 2025
The Works: House red sauce, mozzarella, pepperoni, sausage, green peppers, onions, mushrooms and black olives.
—Haadiza Ogwude, Cincinnati Enquirer, 25 July 2025
Add meat to half of the griddle, add bell peppers and onion to the other half.
—Katlyn Moncada, Better Homes & Gardens, 19 July 2025
See All Example Sentences for onion
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Lyndsay C. Green, Freep.com, 29 July 2025
Dinner began with a plated salad of mixed greens, cherry tomatoes, slivered red onion, English cucumber wheels, chickpeas, and watermelon radish, drizzled with balsamic vinaigrette.
—Ashlyn Robinette, People.com, 28 July 2025
The Works: House red sauce, mozzarella, pepperoni, sausage, green peppers, onions, mushrooms and black olives.
—Haadiza Ogwude, Cincinnati Enquirer, 25 July 2025
Add meat to half of the griddle, add bell peppers and onion to the other half.
—Katlyn Moncada, Better Homes & Gardens, 19 July 2025
See All Example Sentences for onion
Cite this Entry
“Onion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/onion. Accessed 4 Aug. 2025.
Copy CitationKids Definition
onion
noun
on·ion
ˈən-yən 
: a widely grown Asian herb related to the lilies and having edible bulbs that have a sharp odor and taste and are used as a vegetable and to season foods
also
: its bulb
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